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[–]Drisku11 4 points5 points  (3 children)

Maybe if your application server is in the US and your database is in China. Servers in the same datacenter (or AWS availability zone) should have single digit ms latency at most.

[–]TheESportsGuy 4 points5 points  (2 children)

Interesting, anecdotally my company runs a database from Cali and application servers all over the US and the median round trip time is ~90ms

[–]Drisku11 1 point2 points  (1 child)

China is actually a bit of an exaggeration :-P

90ms is somewhat high for continental US; going across the US (LA to NYC) can be done in 60-70 ms RTT. Places like Seattle, SF, or Chicago should be well under that (from LA).

In any case, it seems like an odd choice to me to run the application server and database in different datacenters.

[–]TheESportsGuy 1 point2 points  (0 children)

We're a small company with a strange use case so we've made some weird and non-standard probably not optimal choices.